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2001, 20 (1): 0-0 doi:
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APPLICATION OF BP NETWORK AND GENETIC ALGORITHM
TO D ISPLACEM ENT BACK ANALYSIS OF ROCK SLOPES

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2001, 20 (1): 1-1 doi:
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[PDF 323 KB] (1393)

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Two impo rtan t aspect s in disp lacem en t back analysis, calcu lat ion eff iciency and reliab ility, are
discu ssed. F irst ly the erro r back2p ropagat ion neu ral netwo rk (BP netwo rk) is u sed to sub st itu te the t im e2
con sum ing f in ite elem en t analysis, and secondly genet ic algo rithm is u sed fo r the op t im izat ion of ob ject ive
funct ion, m ak ing back2analyzed so lu t ion s irrelevan t to in it ial values. The feasib ility is verif ied by back
analysis of a th ree2m edia slope.

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STABIL ITY ANALYSIS ON THE HIGH SLOPES
OF THREE-GORGES SHIPLOCK USING FLAC-3D

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2001, 20 (1): 6-6 doi:
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[PDF 357 KB] (1481)

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The theo ry background of FLAC23D and it s featu res are in t roduced f irst ly and then the analysis on
the st resses, defo rm at ion and param eter sen sit ivity of the h igh slope of Th ree2Go rges sh ip lock are p resen ted.

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NUM ERICAL SIM ULATION ON CRACK PROPAGATION AND
RE INFORCEM ENT EFFECTIVENESS OF ISOLATED ROCKMASS
BETWEEN SHIPLOCKS OF THREE GORGES PROJECT

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2001, 20 (1): 11-11 doi:
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[PDF 301 KB] (1051)

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W ith app licat ion of f ractu re m echan ics, the p ropagat ion ru le of single rack and m u lt i2crack s w ith
differen t length and dip on the selected typ ical cro ss sect ion of sh ip lock are num erically sim u lated. The
differen t reinfo rcem en t schem es in design, real con st ruct ion, and w ithou t any ancho r are compared w ith each
o ther.

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STRUCTURAL ANALYSIS FOR THE L INER AND SURROUND ING ROCKS
OF D IVERSION TUNNEL IN J INP INGWATERPOWER STATION

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2001, 20 (1): 16-16 doi:
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[PDF 283 KB] (1179)

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The diversion tunnel in J inp ing w aterpow er stat ion is located at the region w ith h igh moun tain and
great go rge. The su rrounding rock s of the tunnel is of deep em bedded dep th, h igh ground st ress and rich
underground w ater. The wo rk ing behavio rs of the liner and su rrounding rock s under the underground w ater
condit ion s are system at ically studied and eualuated. Som e suggest ion s fo r the suppo rt design of diversion
tunnelw ith h igh groundw ater level are p resen ted.

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SLOPE STABIL ITY ANALYSISW ITH BLOCK ELEM ENTM ETHOD

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2001, 20 (1): 20-20 doi:
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[PDF 225 KB] (1246)

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The slope stab ility is a very impo rtan t p rob lem in rock and so il engineering. The ex ist ing m ethods
of slope stab ility analysis have differen t defau lt s, som e are very comp licated, som e are too simp lif ied. A n
imp roved R igid Body L im it Equ ilib rium M ethod——B lock Elem en t M ethod is app lied to analyze slope
stab ility. The m ethod has the advan tages of R igid Body L im it Equ ilib rium M ethod and F in ite Elem en t
M ethod. In th is m ethod, the w ho le equ ilib rium condit ion s are kep t, and the defo rm at ion of m aterial is
con sidered to som e ex ten t. Examp les show that it is a sen sib le and effect ive m ethod of slope stab ility
analysis.

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FORM ING COND ITIONS AND SL ID INGM ECHANISM OF SW ITCH
YARD SLOPE AT TIANHUANGP ING POWER STATION

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2001, 20 (1): 25-25 doi:
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T ianhuangp ing pumped2sto rage pow er stat ion is located in A n ji Coun ty, Zhejiang P rovince. The
f ield of 500 KV sw itch yard is a p ivo tal p ro ject of the pow er stat ion and fo rm ed by excavat ing moun tain
slope. The rock slope slid above the sw itch yard f ield du ring con st ruct ion period on M arch 10, 1996.
A cco rding to the research and t reatm en t on th is slope2sliding, the fo rm ing condit ion s, inf luence facto rs and
wo rk ing m echan ism of slope2sliding are studied.

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STUDY OF THE STABIL ITY OF SHIL IUSHUBAO
SLOPE IN HUANGLASHI SLOPE GROUP

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2001, 20 (1): 29-29 doi:
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[PDF 316 KB] (1197)

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The concep t of design ing rainfall p rocess is def ined on the basis of p robab ility analysis on the
rainfall p rocess at Huanglash i slope. The perm eance cu rve of the design ing rainfall p rocess is given. The
un satu rated and un steady seepage analysis is m ade on the slope under the condit ion of rainfall. The stab ility
of Sh iliu shubao slope is comp rehen sively evaluated con sidering variance of facto rs of rainfall p rocess,
reservo ir elevat ion and earthquake in ten sity.

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THE FRACTAL INCREM ENT OF DYNAM IC SUBSIDENCE OF THE
GROUND SURFACE PO INT INDUCED BY M INING

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2001, 20 (1): 34-34 doi:
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[PDF 150 KB] (1130)

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The regu larity of the dynam ic sub sidence f ractal increm en t of the ground su rface po in t is revealed
fo r the f irst t im e. The research resu lt s indicate that the dynam ic sub sidence cu rves of the ground su rface
po in t show stat ist ical f ractal character and fo llow the f ractal increm en t model of the shape of large“z”in laid
w ith sm all“z”. The f ractal in terpo lat ion in the dynam ic sub sidence cu rves of the ground su rface po in t is
realized. Based on lim ited sub sidence data ob served in site, the sub sidence value of the ground su rface po in t
at any t im e can be evaluated in certain p recision. Th is gives a new w ay to p redict the dynam ic sub sidence and
dynam ic defo rm at ion of the ground su rface po in t. A t the sam e t im e, th rough the regu larity of the dynam ic
sub sidence f ractal increm en t of the su rface po in t, the physical m echan ism of in terio r rock movem en t and
dam age is disclo sed, w h ich is of theo ret ical impo rtance to study m in ing sub sidence.

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ANALYSISON ENERGY D ISTRIBUTION AND PRED ICTION
OF ROCK BURST DURING DEEPM INING EXCAVATION
IN L INGLONG GOLD M INE

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2001, 20 (1): 38-38 doi:
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The m in ing dep th in L inglong go ld m ine ismo re than 500m and w ill exceed 1 000m in the fu tu re.
Rock bu rst s w ill be a seriou s p rob lem fo r the m ine du ring deep m in ing excavat ion. Based on the resu lt s of
system at ical rock m echan ics experim en t s and num erical modeling analysis, the dist ribu t ion statu s of energy
in su rrounding rock m ass and po ssib ility of rock bu rst du ring deep m in ing excavat ion in L inglong go ld m ine
are analyzed, u sing variou s p redict ion criteria of rock bu rst. The m ethods fo r p ro tect ion of rock bu rst are
also p rovided.

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FOLD CATASTROPHEMODEL OFM INING FAULT ROCKBURST

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2001, 20 (1): 43-43 doi:
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[PDF 357 KB] (1190)

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The equ ilib rium equat ion of su rrounding rock2m in ing fau lt system is estab lished. The fau lt
destab lizing p rocess w ith shear failu re pat tern belongs to fo ld catast rophe model. The model can be u sed to
verify the know n crit ical condit ion fo r rock system to destab lize and give the condit ion fo r rock system to
resum e quasi2stat ical state. The om en and po st stages of rock bu rst of the su rrounding rock2fau lt system can
be described by analyt icw ay. The calcu lat ion fo rm u lae of fau lt offset and energy release of su rrounding rock s
are ob tained. The ob tained analysis resu lt s can be verif ied to tally by the test resu lt s.

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EXPERIM ENTAL STUDY ON THE RELATION BETWEEN THE
BURST TENDENCY AND WATER CONTENT IN COAL SEAM

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2001, 20 (1): 49-49 doi:
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[PDF 199 KB] (1037)

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The relat ion s are determ ined system at ically betw een the bu rst tendency and w ater con ten t, the
w ater con ten t and po ro sity in coal seam by experim en t. It is found that the bu rst tendency of coal seam
depends inversely on the w ater con ten t, and it is mo st sen sit ive in o riginal w ater con ten t. The satu rated
w ater con ten t in coal seam depends on po ro sity in coal. A reliab le quan t itat ive basis is p rovided fo r
p reven t ing rockbu rst in coalm ine by u sing w ater in ject ion m ethod.

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ON BOLTING SUPPORT OF ROADWAY IN EXTREM ELY SOFT
SEAM OF COAL M INEW ITH COM PLEX ROOF

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2001, 20 (1): 53-53 doi:
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[PDF 285 KB] (1446)

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The bo lt ing suppo rt p rincip le is in t roduced to suppo rt roadw ays in ex t rem ely sof t seam of coal
m ine w ith comp lex roof. The m ain tenance of su rround rock s is con t ro lled by reinfo rcing comp lex roof and
two side w alls. W ith an engineering examp le, a new k ind of successfu l suppo rt ing techno logy is in t roduced.
The roof is reinfo rced u sing fu ll2co lum n resin bonded h igh2st rength bo lt s and p re2st ressed ancho r w are, and
two side w alls are st rengthened u sing h igh w ater2coagu lat ive m aterial grou t ing.

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MECHANISM ANALYSIS ON FLEXIBLE AND FOLDED FLOORL IFT
AND STUDY OF ITS CONTROL COUNTERM EASURE

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2001, 20 (1): 57-57 doi:
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[PDF 203 KB] (1036)

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A catastophe model is pu t fo rw ard fo r analyzing destab ilizing m echan ism of f lex ib le and fo lded
f loo r. The zon ing of f loo r stab ility in con t ro l space, inf luence of the fo rce mo t ion w ays in con t ro l space on
f loo r stab ility and the t rigger m echan ism of vert ical fo rce distu rbance are p robed. The amp le and essen t ial
condit ion of deciding destab ilizing is set up. O n the basis of analyzing the effect of variou s affect ing facto rs on
f loo r stab ility, the con t ro l coun term easu re of th is k ind of f loo r lif t is also studied by m ean s of FLAC.

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FEASIBIL ITY TESTING AND INVESTIGATION ON A NEW
TECHNOLOGY FOR HARD ROCK TUNNEL INGW ITH A
COLL IMATED ABRASIVEWATER JET

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2001, 20 (1): 61-61 doi:
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[PDF 309 KB] (1094)

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A new 2type tunneling system , Co llim ated A b rasive W ater J et (CAWJ ) cu t ter, is develped to
increase the tunneling speed and imp rove the cu t t ing quality in hard rock. A nd it s characterist ics of
conf igu rat ion and operat ing p rincip le are discu ssed. The effect s of cu t t ing hard rock w ith variou s operat ing
param eters on the cu t t ing eff iciency of CAWJ are analyzed. Research resu lt s show that it is p rim arily feasib le
fo r tunneling hard rock w ith CAWJ.

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THE DYNAM IC BOUNDARY COND ITIONSOF TRANSVERSELY
ISOTROP IC STRATIF IED M ED IA

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2001, 20 (1): 65-65 doi:
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[PDF 332 KB] (855)

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The fo rm u las of th ree dynam ic boundary condit ion s of t ran sversely iso t rop ic st rat if ied m edia are
derived. A nd the m ethods how to com b ine them w ith the discret ized algeb raic eigenvalue equat ion fo r
generalized Rayleigh and Love w aves are also given. The dynam ic respon ses of them edia w ith these differen t
boundary condit ion s to concen t rat ive harmon ic loads are evaluated and compared w ith the theo ret ical resu lt s.
Th rough the comparison, it can be found that the respon ses of the m edia w ith damp ing and half space
boundary condit ion s w hen the m edia are th ick, are clo se to the theo ret ical ones. Bu t fo r the f ixed boundary
condit ion, on ly the respon ses of upper so il layers are clo se to theo ret ical ones. The resu lt s near the bo t tom of
so il layers are m uch differen t f rom tho se fo r damp ing and half space boundary condit ion s. A cco rding to the
evaluat ion, the app licab le ranges fo r these boundary condit ion s are suggested.

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DYNAM IC RESPONSE ANALYSIS ON UNDERGROUND EARTH
STRUCTURES CONSIDERING TRAVEL INGWAVES

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2001, 20 (1): 70-70 doi:
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[PDF 306 KB] (858)

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Based on the p rocedu re fo r 22D effect ive st ress dynam ic respon se analysis, a new m ethod
con sidering bo th the t raveling w aves and the st ress difference is p resen ted. Detailed analyses on the tunnel
1# of Shanghai subw ay su rrounded by clay and sand respect ively is given as an examp le of the p ropo sed
m ethod. In each case, differen t sect ion s, differen t direct ion s of t raveling w aves and differen t m ethods to
calcu late the shear st ress are m ain ly con sidered. Th rough the calcu lat ion and analysis fo r differen t situat ion,
the sign if ican t resu lt s are ob tained.

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DEFORMATION PROPERTIES OF JO INTED ROCKMASS
UNDER DYNAM IC CYCL IC LOAD ING

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2001, 20 (1): 74-74 doi:
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[PDF 329 KB] (1309)

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Based on the test of b rit t le m aterial, the dynam ic st ress2st rain characterist ics of the in term it ten t ly
cracked rock m ass are studied fo r the f irst t im e. The inf luence of dynam ic loading f requency and geom et ric
characterist ics of crack on dynam ic defo rm at ion p ropert ies are analysed.

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INCREM ENT AND D ISSIPATION OF POREWATER PRESSURE
IN DYNAM IC DRA INAGE CONSOL IDATION

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2001, 20 (1): 79-79 doi:
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Based on the m easu rem en t in site, the change of po re w ater p ressu re in satu rated sof t clay
foundat ion imp roved by dynam ic drainage con so lidat ion is analyzed and studied. The law s of increm en t and
dissipat ion of the po re w ater p ressu re are discovered. The ob tained conclu sion s p rovide som e u sefu l bases fo r
engineering design and theo ret ical study of dynam ic drainage con so lidat ion.

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SLOPE EFFECT OF BLASTING VIBRATION

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2001, 20 (1): 83-83 doi:
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The respon ses of differen t k inds of slope to the b last ing vib rat ion are analysized, and the examp les
abou t slope effect of b last ing vib rat ion w ave are in t roduced.

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PROBABIL ITY ANALYSIS OF SAND L IQUEFACTION

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2001, 20 (1): 87-87 doi:
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[PDF 186 KB] (949)

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The fou r p robab ility m ethods of sand liquefact ion analysis are in t roduced: ( 1) homogeneou s
po isson model, (2) comp rehen sive p robab ility, (3) to tal p robab ility, (4) crit ical accelerat ion. The later two
m ethods can be u sed in earthquake hazard analysis direct ly, and the resu lt is sim ilar to u sualm ethods, as the
examp le indicates.

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Strengthen ing Founda t ion by
Underwa ter Explos ive Ram

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2001, 20 (1): 90-90 doi:
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[PDF 322 KB] (613)

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U nderw ater exp lo sive ram is adop ted to t reat the foundat ion in the p ro ject of pet rochem ical dock in
L anshan harbo r. Feasibility of th is k ind of foundat ion reinfo rcement method in the p ro ject of pet rochem ical dock in
L anshan harbo r is discussed based on the analysis and comparison of the difference of sea2bo t tom elevat ion, physical
and mechanical p ropert ies of sediments befo re and after exp lo sive ram tests. The rat ional parameters of exp lo sive ram
are designed acco rding to the result of the test. The quant itat ive data of underw ater exp lo sive ram are offered fo r
large scale st rengthening foundat ion of pet rochem ical dock in L anshan harbo r.

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IDENTIF ICATION OF AQUIFER PARAM ETERS
WITHMONTE-CARLO M ETHOD

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2001, 20 (1): 95-95 doi:
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Based upon m easu red data of w ater head and f low , the t ran sm issivit ies of aqu ifer are iden t if ied
w ith Mon te2Carlo random sim u lat ion to sim u late the ob served data. The un iqueness p rob lem is so lved by
modifying the least squaresm ethod and adding a term of f low to the least squares criterion. The study resu lt s
show that the iden t if ied values appear in no rm al dist ribu t ion w hen the ob served erro rs sub ject to the no rm al
dist ribu t ion. The relat ive erro r of the m ean iden t if ied values of the t ran sm issivity is less than 1% by m ak ing
u se of the iden t ifying p rocedu re suggested even if the standard erro r of ob served w ater head app roaches to 1
m.

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LINEW ISE OBSERVATION AND PORTABLE INSTRUM ENTS ON
STRA INMONITORING IN GEOM ECHANIES

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2001, 20 (1): 99-99 doi:
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The concep t of linew ise ob servat ion and po rtab le in st rum en t s are in t roduced. The in st rum en t s can
be u sed in mo st geo techn ique engineering fo r f ield mon ito ring. A long a m easu ring line, m ark s and casings in
sam e in terval are f ixed in stead of p robes. In th is w ay one p robe can serve m any m easu ring bo reho les and
p ro jet s as w ell. Som e p robes can m easu re ax ial st rain, som e can m easu re bo th ax ial and lateral st rain o r
disp lacem en t in one ho le in any direct ion s. The info rm at ion and accu racy ob tained w ill be m uch mo re and
h igher than that gained by f ixed p robes based on po in tw ise ob servat ion, such as concrete st rain guage. Som e
app licat ion s on f ield mon ito ring in geom echan ics are in t raduced b rief ly.

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EFFECT EVALUATION ON INSERT PENETRATION TO ROCK AND
OPTIM IZATION OF INSERT SHAPE

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2001, 20 (1): 110-110 doi:
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[PDF 192 KB] (1005)

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O ne of the key facto rs to affect the penet rat ion effect of in sert to rock is the crow n shape of the
in sert. So it is necessary to develop a scien t if icm ethod to evaluate the differen t shapes of in sert s. A im ing at
the disadvan tage of ex ist ing research on in sert, a set of m ethods and gu idelines to evaluate the penet rat ion
effect of differen t in sert s to differen t rock s are pu t fo rw ard by judging crater vo lum e per un it penet rat ing
energy in in sert2inden t ing test. Som e p rob lem s related to in sert evaluat ion and op t im izat ion are also studied
in to.

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A DETERM INATIONM ETHOD OF JO INT SHEAR STRENGTH

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2001, 20 (1): 114-114 doi:
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A fo rm u la is estab lished on the relat ion sh ip of jo in t rebound values and basic f rict ion angles. Som e
m ethods are p resen ted to determ ine the jo in t un iax ial comp ressive st rength and basic f rict ion angle, and to
m easu re jo in t roughness by pho tograph m easu ring m ethod. A determ inat ion m ethod of jo in t shear st rength is
estab lished based on the rebound test, pho tograph m easu ring m ethod and the test resu lt s.

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INFLUENCE OF INITIAL STIFFNESS OF CONTACT ELEM ENT ON
DEFORMATION OF DEEP FOUNDATION P IT IN SOFT SO IL

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2001, 20 (1): 118-118 doi:
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The Goodm an elem en t is u sed to sim u late the in teract ion betw een so il and st ructu re. Tak ing the
deep foundat ion p it of Huangpu river w alk ing tunnel as an examp le, the inf luence of st iffness of Goodm an
elem en t on disp lacem en t of w all and su rface set t lem en t is analyzed w ith f in ite elem en tm ethod. Th is p rovides
a basis fo r the cho ice of st iffness coeff icien t s on num erical calcu lat ion of sof t so il foundat ion p it and
info rm at ionalized con st ruct ion.

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RE INFORCEM ENT AND COM PREHENSIVE RECTIFY ING
DEVIATION OF SOM E BUILD ING ON SOFT SO IL

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2001, 20 (1): 123-123 doi:
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Severe unequal set t lem en t is fo rm ed w hen a n ine2sto ry bu ilding is bu ilt on deep th ick sof t so il.
The stat ic p ress ancho red p ile, loading m ethod, w ater2jet t ing m ethod and digging ou t so il m ethod are
comp rehen sively u sed to reinfo rce the foundat ion and rect ify deviat ion of the bu ilding. Engineering p ract ice
p roves that the effect is sat istacto ry.

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RESEARCH ON ELECTRICAL RESISTIVITY FEATURE
OF CEM ENT-SO IL AND IT′S APPL ICATION

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2001, 20 (1): 126-126 doi:
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[PDF 316 KB] (1218)

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The elect rical resist ivity is one of the featu re param eters of cem en t2so il. The elect rical resist ivity
featu re of cem en t2so il is studied. The elect rical resist ivity and un2conf ined comp ressive st rength of cem en t2
so il samp les of differen t cem en t rat io and co re samp les of DJM p iles are m easu red in the labo rato ry,
respect ively. The resu lt s show that the elect rical resist ivity is of linear relat ion sh ip w ith cem en t con ten t and
un2conf ined comp ressive st rength. It can be u sed to exam ine the quality of cem en t2so il p iles.

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EXAM INING THE LONG-YOU GROTTOES IN THEWESTERN LAND
OF ZHEJ IANG PROVINCE FROM THE VIEW PO INT
OF ENGINEERING SCIENCE

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2001, 20 (1): 131-131 doi:
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EARTH PRESSURE CALCULATION CONSIDERING
SO IL -WATER JO INTLY ON EXCAVATION

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2001, 20 (1): 134-134 doi:
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[PDF 118 KB] (1040)

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STUD IES AND APPL ICATION OF OPTICAL M EASUREM ENTM ETHODS
TO D ISPLACEM ENT F IELDS OF SIM ILARMATERIAL MODEL

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2001, 20 (1): 135-135 doi:
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[PDF 89 KB] (761)

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THERMO-HYDRO-M ECHANICAL COUPL ING ANALYSIS ON FRACTURED
ROCKMASS SURROUND ING NUCLEARWASTE REPOSITORIES

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2001, 20 (1): 136-136 doi:
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[PDF 69 KB] (803)

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RESEARCH ON SYNTHETIC EVALUATION ABOUT VULNERABLE
DEGREE OF REGIONAL SUSTA INING-HARZARD BODY

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2001, 20 (1): 137-137 doi:
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[PDF 89 KB] (1464)

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EXPERIM ENTAL AND THEORETICAL STUD IESONM ECHANICAL
PROPERTIESOF GRANITE UNDER DYNAM IC COM PRESSIVE LOADS

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2001, 20 (1): 138-138 doi:
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COM PLETE STRESS-STRA IN BEHAVIOR
FOR SHEAR FA ILURE OF ROCKS

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2001, 20 (1): 139-139 doi:
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[PDF 128 KB] (694)

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博士学位论文摘要　The invest igat ion of comp lete st ress2st rain behavio r and comp ressive failu re behavio r of
som e Hong Kong rock s are carried ou t. A large num ber of test s have been conducted to study the
defo rm at ion and failu re featu res of rock s. Som e in terest ing test resu lt s have been ob tained. These resu lt s
show that localized defo rm at ion and failu re st rongly affect the defo rm at ion and failu re p rocess of the
specim en s ju st p rio r to the peak st ress and in the po st2peak stage.
The two types of failu re modes, nam ely exfo liat ion and shear failu re have been invest igated in detail.
Fo r the exfo liat ion failu remode, an experim en tm ethod has been p ropo sed to ob serve the exfo liat ing p rocess.
A p ropo sed model has been u sed to exp lain the inf luence of exfo liat ion on the gro ss st ress2st rain cu rve. It is
found that the exfo liat ion du ring loading m ay be one of the reason s that a gran ite specim en exh ib it s Class Ê
behavio r. The inf luences of m ach ine st iffness con t ro l modes, end con st rain t s, loading rate and conf in ing
p ressu re on the test resu lt s have been discu ssed and invest igated. A new classif icat ion m ethod of rock failu re
has been p ropo sed.
Special at ten t ion has been devo ted to the invest igat ion of the localized defo rm at ion and failu re p rocess of
in tact rock in the shear failu re mode. A test m ethod is p ropo sed to detect the p rocess. It is found that the
defo rm at ion of rock m aterial m ay be divided in to th ree stages: nam ely un ifo rm stage, p re2peak b ifu rcat ion
stage and po st2peak b ifu rcat ion stage. Th is phenom enon has been exp lained by a p ropo sed qualitat ive
analysis.
It is fu rther found that th is localized p rocessw ill sign if ican t ly inf luence the shape of st ress2st rain cu rves,
that is, the localized defo rm at ion is one of reason s that rock disp lays the effect of length to diam eter rat io. A
con st itu t ive model is p ropo sed to sim u late the localized defo rm at ion and failu re p rocess. It can sim u late the
st rain sof ten ing, st rain localizat ion, effect of length to diameter (L öD ) rat io, un loading2reloading respon s,
and elast icmodu lu s degradat ion, etc. Based on the model, a new st rength criterion exp ressed by the relat ive
shear disp lacem en t is p ropo sed. Th is criterion cap tu res the comp lex featu res of peak st rength of rock such as
the size effect.